Physics Help Needed

Hi I am doing physics. I am totally lost..lol..My teacher is not very good at all and never shows any methods for any calculations, he jumps strait to the answers…. I really need some help with a question, I don’t have a clue as to what method I need to take to solve the question???...is there any chance sum1 can help me as I don’t know where to start with it???...I have set up the question as an attachment and if you could help me I would be VERY grateful….thanks…!!

Find the current flowing and the voltages developed across each of the reistors in the circuit???...ive been given a handout on kirchoffs laws but it doesnt say how to use them, it doesnt have any examples of how to work them just answers???..im lost..lol